Nature’s creatures can be ferocious! Lions and sharks leave many animals running scared. But some predators may be hunting beneath your feet or above your head—and you don’t know they’re there. Meet some of the most successful predators on Earth: little killers.

These small creatures can have a big impact. They change ecosystems, control pests, and even take down much larger prey. Tiny predators use adaptations including poisons, strong jaws, and social groups hunt. From pteropods to driver ants, author Sneed B. Collard III shines a light on the lives of these voracious killers with jaw-dropping facts paired with incredible close-up photographs.